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연료전지차량의 스택 냉각수를 이용한 히터시스템 개발에 대한 연구
김응영(Eungyoung Kim),조후택(Hootak Cho),임균수(Kyoonsoo Lim),이승용(Seungyong Lee),김치명(Chimyung Kim),김철민(Cheolmin Kim) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
Heating source of Our company’s FCEV was only high voltage PTC heater. This system has the merit of quick heating compared with existing heater system using waste heat energy of vehicle’s engine. But the system has the cold RAM AIR inflow problem to the passenger’s side at blower OFF and the fuel efficency falling-off problem (40.2%↓) by using 5㎾ high voltage PTC for heater operation. This study developed our company’s first hot-water heater using stack coolant in the second stage of MOHAVE FCEV and improved heating performance and fuel efficiency (max 38%↓) by combination of hot-water heater and PTC heater at optimal condition, and proposed guide about the development direction of FCEV, the next generation’s environment-friendly vehicle’s heater system.
리어 범퍼 백빔 일체형 가변 트레일러 리시버 시스템 개발
김남철(Namcheol Kim),이승목(Seungmok Lee),차동은(Dongeun Cha),임균수(Kyoonsoo Lim),조후택(Hootaek Cho) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
It is common to use the Trailer hitch system to carry a small cart, bicycles, a boat and even car. And most of them are attached on side members of a vehicle as after-market products. But it is hard work to detach a muffler and rear bumper because of huge size and crossing layout, and make a trouble to decline the fuel efficiency and an attractive unique appearance of car. So a vehicle like SUV, MPV and SUT has been sold as attached a hitch receiver by car makers. Recently a receiver is being put to use for disable person and elder people. This paper shows consideration points for developing rear bumper and beam system integrated variable hitch receiver.